Process for dyeing textile fiber violet-blue.



printed in a mixture with the reducing agent concentrated sulfuric acid it changes to a 1 violet, and. upon grade (90 to 95 centigrade). and treat of philosophy passed through the alkali.

=7 about fifteen (15) parts of a ten (10) per cent.

Unrrnn 's'rarns rarnnr OFFICE.-

oscan BALLY, or MANNHEIM, GERMANY. ASSIGNOR TO BADISCHE iANI- LIN SODA FABRIK, OF LUDWIGSHAFEN ON -THE RHlNIL A CORPORATION OF GERMANY.

PROCESS FOR DYEI'NG'TEXTI'LE FIBER VIOLET-BLUE.

Specification of Letters Patent. Armlieation filefl February 21, 1906. fierial N 246,76-

No. 840,419. Patented Jan. 1, 1967.

To all whom it may concern:

Be it known that I, OSCAR BALLY, doctor and chemist, a citizen of the Swiss Republic, residing at Mannheim, in the Grand Duchy of Baden, have invented new and in Processes for Dyein Blue, oi which the fol tion.

My invention relates to methods of dyeing and printing with certain coloring-matters.

In the specifications of Letters Patent Nos. 809,892, 818,992,and 820,379 is described the production of violet-blue coloring-matters by heating with caustic alkali a compound containing a benzanthrone group.

I have now discovered that when both dyeing and printing the coloring-matters have to be reduced in the presence of 'an alkali. When printing, the dyes can be 1 five (5) or six (6) about sixt -five (65) parts of caustic-soda lye, (containing about twenty-three and a half (23.5) per cent. of NaOH,) so as to pro- German Empire, I duce a vat.

useful Improvements Textile Fiber Violetowing is a specificacotton goods in this vat by manipulating them therein for about three-quarters of an hour (45 minutes) while maintaining the temperature at from ninety to ninety-five degrees centigrade (90 to 05 centigrade.) Wash and dry the goods, acidify, and wash again. By this process a dark-violct-blue shade of exceptional fastness against the action of light,washing, and chlorin is obtained.

Example 2Proce8sf0r dyeing with the dyestafi from the condensation product of anthranol and lycerin.-Suspend about fifteen parts'o a ten (10) per cent. paste of the dyestufi obtained in the alkali melt from the condensation product of anthranol and glycerin in about one Water at a temperature of from sixty to six tyfive degrees centigrade (60 to 65 centigrade) and. treat this suspension product with about thirty-five parts of a solution of sodium hydrosulfite (containingahout five (5) or six (6) per cent. of the salt) and about twenty-five (25) parts of caustic-soda lye, (containing about twenty-three and. a half (23.5) per cent.- of NaOH,) so as to obtain a vat. Dye about fifty parts oi cotton goods in this vat for about three-quarters. of an hour (45 minutes) at a temperature of from sixty to sixtysfive degrees Centigrade to centigrade.) Wash oods, acidity, and rinse them once more. y this method a dark-violetdulue shade of superior fastness against the action of light, washing, and chlorin is obtained.

Example 3 Pr0cess for pranting.-Prepare a printing-paste from sixty (60) arts of gum-arabic, seventy parts of extrin, one hundred and ten'( 1-10) parts ot water, five hundred (500) parts of caustic-soda lye, (containing about forty-one 1].) per cent. of NaOH,) fifty (50) parts of glycerin, sixty (60) parts of stannous oxid paste, (or a corresponding quantity of stannous chlorid,) and one hundred and fifty (150) parts of a ten (10) per cent. paste of either of the dyestuffs this i employed in the foregoing Examples 1 and suspension product with about fifty-five (55) Print the goods with this paste, .dry, and parts ofsodiumhydrosulfite (containingabout steam for from five (5) to ten (10) minutes in and an alkali onto the fiber and thensteamed, or they can be printed in admixture with the reducing agent without the addition of an alkali and the printed material subsequently Fiber which has been thus incorporated with one of the aforementioned violet-blue coloring-matters can be recognized, since it yields the following reactions: Upon boiling with hydrochloric acid it. remains practically unaltered in color, upon treatment with caustic-soda solution it becomes redder, and upon treatment with color ranging between greenish-blue and redsubsequent treatment with water it shows a violet color.

The following examples will serve to further illustrate the nature of my invention, which, however, is not confined to these examples: The parts are by weight. Example I-Process for dyeingw'ith the dyeet'ufi from the condensation product of betaamido-anthraqainone and glycerin.-Suspend i paste of the coloring-matter obtained from the condensation product" of beta-amido-an thraquinone and glycerin in about one thousand (1,000) parts of water at a temperature or" from ninety to ninety-five degrees centiper cent. of the salt) and Dye about fifty (50) parts of thousand (1,000) parts of the dyed GERMANY,

' an apparatus suitable for alkali m ithe and washwith soda.

printed uickly steaming andin the absence of air. I inse with water Instead. of stannous oxid or stannous chlorid, hydrosulfite or other reducing agentcan'be used. 7

Example 4Process for printing without pMnting-paste. Prepare a. printing-paste with two hundred and twenty .(220) parts of British v gum, seventy-five (75) parts of gum-arabic,

stannous' chlorid, (tin saItQninety (90) arts of'fernoussulfat'e; (iron vitrioh) and'one 'un dred: andzfity (1'59) parts of a ten (l)=pe'r cent. paste ofeither-of. the dyestuffs used inthe'preoedingvEXamples 1 andf2. Print the matenialwith this thnough: a;' warm (oontainin cent. of. aOI-I) at a: te sixty-five to seventy-five degrees oentigra'cle;

(65 to 75 oentigrade.) Wash the goods" first' with Water and then in order toiremove the-iron witha suitable acid:

III'OIdBI togoods: u on which no oolorin '-'matte1'- is om becorning slightly caustic soda: in which. the color isfixedz Now what I olaimise- 1'. The process of shadeson textilefiber y converting a colon-- four, hundred and 'fifty (T5) parts' i'off rinting-pas'te, dry it, and passitfon'abouthilta minute (Ml-seconds)- solution. of: caustic soda from ten to'twelve (1-2) per nqperature of: fro'iiiprevent thewhite parts of the ed, a littlemanganese peroxid can be added tothe reducing violet-blue t1c alkali a compound containing a benzanthrone group, into itsreduotionproduot sodiumv hydrosulfite;

3. Asa new'antieleofi matter which can be obtainedi with: oaustiealkali? a. coin benzanthrone group, W fiber remains practically unaltened 111- color upon boiling with hydrochloric acid, and? upon? treatment with caustic-soda: solirtion becomesredder and upon vconcentrated sulfuric acid? andi subsequent treatment withzwater shows a: woletfcolon.

y In" testimony whereof I- have hereuntd set by' heatingwitnesses.

OSCAR BALLY. Witnesses: i

,ERN EsT F. Enigma-1mm,

JosiHtLnurn;

soluble-form by acting onit with a suitable reducing agent an ound oontaining aioh heonporated= my hand: in the presence of two subscribing e form of a colbe obtained fromlthe coloring-matter and I manufaeturetextile I fiber incorporated-with!awiolet-hluecololing 5 treatment: Wliih; 

